Spence T61 Series Pneumatic
Temperature Controller
▲
WARNING
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
fire and/or chemical contamination
causing property damage and personal
injury or death.
Emerson temperature controller must
be installed, operated and maintained
in accordance with federal, state and
local codes, rules and regulations
and Emerson Process Management
Regulator Technologies, Inc.
(Emerson) instructions.
If the temperature controller vents gas
or a leak develops in the system, service
to the unit may be required. Failure
to correct trouble could result in a
hazardous condition.
Installation, operation and maintenance
procedures performed by unqualified
personnel may result in improper
adjustment and unsafe operation.
Either condition may result in
equipment damage or personal injury.
Only a qualified person shall install
or service the T61 Series Pneumatic
Temperature Controllers.
Introduction
Scope of the Manual
This manual provides instructions for installation,
maintenance and parts information for the T61 Series
pneumatic temperature controllers.
Product Description
The T61 Series Temperature Controller is ideal for
wide ranging, fast changing loads on instantaneous
heaters and other difficult process applications. The
cascade principle, normally used only on instrument
type regulators, is the basis for this design.
T61 Series, used with a properly selected A Series
Pilot or Control Valve, continuously adjusts a
pressure regulator to the required heater pressure.
This action, coupled with the fast response of a
bimetallic thermostat, gives exceptional results.
Added convenience and economy results from the
wide (200°F / 93°C) adjustable range and the low air
consumption (0.35 cfm / 0.59 m
3
/h). These controllers
have adjustable proportional band as well as over
temperature protection.
Type T61:
For applications where air control signal
decreases as process temperature increases.
Figure 1.
T61 Series Pneumatic Temperature Controller
Instruction Manual
VCIMD-14960
November 2021
T61 Series
